[Plugin] SketchyFFD (Classic)

Tobobo

Thanks REGIS

I'll have to think of another way to deform the netting.

REGIS

Perhaps ypu can subdvide it using subdivide=true when you create your FFD control box.

Cheers

SKELL

I am trying to take a simple rectangular solid and deform it. i have to sub divide the surface? how can i go about this?

Thanks,

-Tony

pilou

One possibility
Draw a rectangle
Pull it with Ctrl any time you want
Select all (triple click)
Move it one time + CTRL = Copy
Type "10*" (or more) = Multiple
Select all (triple click)
Group it
Select group Right Click / FFD
Edit the goup "FFD"
Move points
Et voilà

rec.skp

michaelland

Hi Chris, I've to say your work for this amazing RB is really great help for me! Thanks for your great job and sharing with us!!

Michael Xie

BTM

@skell said:

I am trying to take a simple rectangular solid and deform it. i have to sub divide the surface? how can i go about this?

Thanks,

-Tony

There's a subdivide feature in the script.right click> FFD> NxN> set subdivide to true.

pilou

@unknownuser said:

FFD> NxN> set subdivide to true.

Yes but will be any effect on the subdivide of a simple rectangle!!!
Nothing will arrive when you will move a point of the FFD!

Seems the only easy methode is draw a rectangle with the Sandbox

jonorman

Hi..

I think there might be a problem with FFD an ASGVIS V-ray for scetchup.. FFD did not work while i had V-ray installed but now that i have uninstalled V-ray FFD works fine again.. Same problem as with subdivide and smooth script..
can anyone else confirm this ?? Btw, FFD is a brilliant script.

GJV

woooaaaa

amazing plugin
just what I needed

thanx a lot !!!!

Dee256

Works nice! But "transformations reset" needs sometimes before FFD starts.

ideas_arte

.. thanks a million!

really useful too

niarfe

this looks like a wonderful ruby!!!

too bad it's not working for me, it doesn't do anything, and when I try undoing it beaks my geometry apart!

would have loved to use it

Chris Fullmer

Its not over yet. If its not working, then its installed wrong or your using it wrong. Or you have version 4 of SU

Could you provide a better description of what its doing wrong? Perhaps screenshots, maybe a video. Just give us some more detail and we'll get it working for you.

Chris

sprezzaturon

I'm running Sketchup 7 and just added your FFD tool. I can move points but there is no 'update FFD' option when I'm finished. Is FFD not compatible with Sketchup 7?

Thanks!

remus

The shape should update automatically, you might have to give it a bit of time, though.

If that doesnt work delete the control points, explode the group, regroup and try again.

sprezzaturon

After waiting on a 2.4 GHz dual core XP system, nothing changed. I've just installed FFD on my computer (2.1 GHz dual core) and created a circle so I could elongate one point. Nothing. This is disappointing.

remus

Have you tried it on 3d geometry? i think it can work on 2d things, but ive never gotten the hang of it.

hasan

@cphillips said:

@unknownuser said:

I can't get this script to work. Nothing happens.
I create a sphere, group it, right-click and do 3x3 FFD, enter the new group with Construction Points, move some to another position, exit the group, right-click the sphere group and choose Update FFD. Nothing happens.

Can you open the ruby console and see if it is printing any errors?

Chris

steven-arts

Hi Chriss,

it really makes fun to work with FFD! I looked at your code and found the factorial function where you mentioned to encrease performance by adding a table for factorials. I made it dynamic and it boosts your code! Just replace the section with:


#used by calcBernstein. could be replaced by a table since in 
#this application n is never more than 3 (number of control points).
$fTable = []
def factorial(n)
    sum = $fTable.rassoc(n)
    if sum
    	return sum[0]
    else
	sum = 1
	sum.upto(n) { |i| sum *= i }
	$fTable << [sum, n]
	return sum
    end
end

Ciao, Stefan

CPhillips

Thanks Stefan! Its a nice idea. I updated the plugin with an adaption of the code and applied it to the Bernstein Polynomial as well. It sped up the initial weighting of a big model from 75 seconds to 15 seconds.

I also figured out a way (in theory) to speed up the actual deformation by like 50x. The only problem is I would have to handle moving the control points without using any of Sketchups tools like select, move and rotate. Ugh!